Steps to Setup the Backend
Step 1: Create a new directory for your project and navigate into it in your terminal.
mkdir server
cd server
Step 2: Run the following command to initialize a new Node.js project.
npm init -y
Step 3: Install the necessary packages/libraries in your project using the following commands.
npm install ws
Project Structure:
The updated dependencies in package.json file will look like:
"dependencies": {
"ws": "^8.16.0"
}
Example: Implementation to setup the backend for the above application.
// index.js
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
wss.on('connection', (ws) => {
console.log('Client connected');
ws.on('message', (message) => {
console.log('Received: %s', message);
// Echo the message back to the client
ws.send(message);
});
ws.on('close', () => {
console.log('Client disconnected');
});
});
Output: Run the server with the following command in the terminal
node index.js
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